Display board



May 20, 1930. E. E. LEU 1,759,486

DISPLAY BOARD Filed May 27, 1929 2 Sheets-Sheet l I F l. 42 B INVE ATTOEY.

Patented lVlay 2O, 1930 DISPLAY BOARD Application ifiled Mam,

a The present invention relates to display boards" anchmoreparticularlyto display boards of the type whereinmoyable dislpaysections are p'ivotally'mounted so as to, be

readily shifted for the Withdrawal v and 'insertion of advertising anddisplay .matter in the form of cards, .posters, display sheets andthe/like. I q f.

' 7 One object ofthe'inventio'n isto produce 10 a durable weather-proofstructure which may be positioned and used" out-of-doorsias wellasindoors, i

Another object'is to so mount the moi/ able display sections that theymay be easily shifted from their receiving or open pesitions tothedisplay or closed positions and yice versa.

Anoamrob ea is to position the e in such relation to each other thatwhen all 0 sectionsare in display position they maybe readily lockedinplace byftheapplication of a look at a single ;p0int. e

1 Another object isto sojconstruct the different parts of each displaysection and each 5 pocket wherein display-matter islocated that theboard maybe opened up for changing the display matter .in all kinds ofweather 7 without serious injury to the cards or other display matterWithin the Various pockets. Other objects are to. make the entire structure' as well as each of its --parts rugged and durable, to" simplifythe structure as much as possible, and to design it so that it can beeconomically manufactured, installed, and

maintained. 1

In attaining these objects, I preferably-employ a mainframe having threepanels [and .pivotally secure to the frame three d splay sections whichnormally rest in theipanels 40 respectively'but which maybe noyedoutward from. the frame for thepurpose of inserting the display matter.These display sections must be returned .to their display posit-ions ina certainorder to provideia simple 5 locking arrangement. The preferredorder is that the outer sections be' returned first and then the centralsection be moved down .upon the outer sections so as to lockfthem whilethe central section is in turnv locked so by locking :IIlGitIlS- ofaa-nydesired sort, in

1929. Serial No. 366,195.

ordertobring-about proper movement ofthe V outersections 1 preferablyprovideacentral I lever and suitable connections'so that a shift,- ing'of thelever to and fro willnnov'ethe outer sections to and, fro betweentheir opened and closedpositions. Th'einountingf Y of the-outer sectionsis also such that the w outer edge of'each sectionijwill move fromits-normal position in advancefiof the inner l edge. This is forclearance purposes. I also 6 provide an interfering lugon the central"section which gets in the a of the central lever to preventitsoperationwhenever an attempt is madeto. return thesectio'ns to theirnormal positions inthe wrong order. llher'e: Q

are'also other details which have to do with f tages of theinvention-Will be more'fu-llyjunderstoodnpon referenceto the followingde tailed description taken in ,connectionwit'h" theaccompanyingdrawingsand thescopeof "the invention will be particularly pointed out win the appendedclaims." V I V Insaid drawings, Fig.1 is a frontelevation ofv adisplay board constructed'yin' a1c 5 "cordance withthepresent in entiong' Figlfl, is a vertical section through the sametaken on a plane indicated by the line 22 of-Fig. 1 Fig, 3 is ahorizontal fragmentar'y section upon'a somewhat enlarged scale taken ona plane indicated by the line 3 -3 of .Fig.

1; Fig. a is a partial sectional View illustrat .ingthe catch :bar,for'holding" the central display section in its open. position;,F-ig."5 is a similar iew of the same bar construction taken at right anglesto Fig- 4 Fig; '6is a rear elevation of theentire display boardgf Fig. 7is a Vertical section ofthesa'me taken .on a plane indicated by theline-7%? ,ofF i'g. 1 6; and Figs. 8 9, andlO are underneath plan viewsillustrating the central lever andl'coh- 'necting mechanism foroperating the'dis; ,play sections, Fig. 8 illustrating theparts when thecentral section has.beenwinovedfto I its open position, Fig. 9 .theparts at thetime the outer sections arepartly opened, and Fig. ,10 theparts when the outer sections are' in. final open position and thecent-ral section The Various objects, features, and adyan has :beenrestored to its closed position." V V I Throi ghout these views likecharacters refer to like parts;

Referring to the'drawings'in detail, A des-i' ignates the mainframe, Bthe lc'entral display section,;C the left-hand display section, D-therightj-jhand display section, Ethe crank mechanism for operating thecentral; section,

iand Fthe lever mechanism for operating th e"- outer sections. J

Thus, the,

angle bar 21 by 'similarje vd bars 22and23.

connnonplaneland outstanding flanges. f The flanges whichj lie inthefcommon plane con stitiifte' backing 1' me bers tor' the' sections"to abut against vwhenthe sections are in closed o'siti'on in the'*"frame. zvThe outstanding anges constitute inclosing walls for thepockets on panels occupied 'by' the display Ysections. The entirespaceincluded Within theseouter members offthefframe A' is di- 1 ,videdinto a; plurality of panels. In the embodimentshown, there are, threepanels, a

central panel ,for the central display sectioni v aleft-handpanellforthe display section section D. "The division'is madeby employing t 'otherangle" bars,"ipreferably the 'jl'gbars I 24 and 25,and connecting theniat their ends to the bars20 and '21 F The head ofthe T' of each T-b'a'r' lies in the same plane as the Q' d "a gh rhe rwil' t e i p backingmember's o'f'theouter angle bars and i theverticalstem fof the T rofthe "T-bar 'is outstanding from jthis' planeand 3cooperates V, with thefl outstandmg flanges -of 401' the other barsto provide the panels heretofore jmentionedl "As clearly shown, the out-Istanding Webs and flanges of the several bars d i extend far enough toose finclois'u're for the display sections: V I The-paneled frameA m'aybe supported n any . I providea well-walled desired wayiflnm'any'instance'sit may be desirable toattach the-frametothe wall rofabuilding either 'within' the building or :outside offit. In otherinstances the frame will be supported uponposts'or like inde, Ipendentsupportsln the embodiment shown, 1 the latter '1 ajmp oyeprovided way of supportingthe frame is Thus, the end bars 22'and 23 arewithbrackets 26 and27 which are secured/to the bars and apertured forthe passage of thetubularposts '281and29, re

d '7 "spectively.

v Thejlatter are preferably pipes 7 of suitable size provided wit-heaps'80 and '31 Y and suitably positioned in; holes formed in the groundsurroundedjby masses of concrete The centraldisplay section Bis builtupon 'andfout of a main plate .34 which has" three closed positions?ofthe structure. Asillustrated Figs-I2. and 3, the channelthusformed'has an Out-v standing 7 web 35. and an upper iii-turned ingtheflange 36, or thelatter is'replacedby a separate strip, asebedesired. By these omissions on the right-hand side, theidisplay vsection Bis providedwithxopenings,one for a 1 the insertion of the glass4:0i'n'to-its finalposition between the strips 36"and;39,' and the toother'for access to the space 41 between the a glass to and the backplate 34', providedforiui' holding cards, posters andj like advertisingv or'display matter Above the flange36 all thewayaround the section arecovering-pieces 1 t in. the form of fiat stripsfl2- and/l3 at the i top'and bottom of the section and overhanging channelstripsj leand 45 at therigh't and' left-hand edges respectively; These; latt r strips eachhavea flat portion which they Y I it are secured to thepsectionabovethestrip36, and anoverhanging channel portio iwhichfl ii i 1cooperatesjwith stripson the adjacent sections B and C-to formwatertight jointsibetwe'en' [f the three sectionswlien they are all intheir" f' The central section :be formed with;

"one large displaygspace'etl below one large 'pane'of glass iOor itmaybe divided hp 1 v These obviously may divide thelarge area into manyor few smaller' areas,'ias desired-.- .As illustrative, Ihavedividdthewhole into 1 three, providing a relatively'large central i area and twoupper and lower smaller-"areas; Thepartitions used for these'divisionsare 5. of the same general construction as'tlie peripheralwall'ofthesection.- Such con'struci i i 1 tion is illustrated clearly in 'Fig; 2where the i Zia plate'34 has associated with it, the wooden f strips 37and 38, the intervening metal V I strip 39 and'thetopstrip 42'. Theparts 1 f i which go'to make up the peripheral structure i V andthestructure of thepartitions ,are'held; t together by screws 46located' at. intervals I along'the various covering'strips.,Insomeinstances, as shown atthe'left in Fig, 3, a

retaining nut 47 is used upon the' endof the into smaller areas-eachhavingits'own glass A50 and associated space 41,- When divided 7 3 up,partitions are built upon the plateSJE. 1

3, the screw itself is threaded into a threaded J opening in some'partofthelconstriictionv Thus, in the case'o-f the screwtatthe right V ofsection B inFig; 3,'the threaded opening" w for: the screw is tapped inan extrafiangeid,"

strip 48 which is provided'at the open'edge of the-section to cause thesection to more closely'fit about the edges of the T-bar to render thatportion of the structure e thc proof.- At the left the nut]4:7 sufficesand no strip 48 is required because the plate 34'Jis bent into channelform and'water cannot possibly get throughto the space'l The left-handdisplaysection C is built up'in the same manner, as thesection B.

There is a back plate which'is turned'up around'three edges of the plate50 and its fourth, or inner,edge is open for the inser- 'tion of displaymatter within the space 57 below'the glass 58!, As-in theprevious'ca'se,

the flanges 52 are coveredby strips 59 at the top, 60 at. the bottom, 61on theleft-hand side and 62 on the right-hand side, The screws 56passing down through all of the associated members, and,- along thethree sides of the section, are held in place nuts Alfong thefourth-side, wherethe section is open for] the insertion of theadvertising matter, theplate 62 has an-up-turned flange whichfits snuglyinto' the channel of the strip 44 on theadjacentsection B. The.op-.

. posite side of thisopen structure ispro vided with a plate 64: whichis tapped at suitable intervals for thescrews 56, this plate being usedinstead of' the nuts 63. The plate 64 is flanged so as to fit tightlyabout the V T-bar 24 for the purpose of making the structureweather-proof, as before expla ned 1n connection with a similar bar 48.1th this structure it will be seen that the channel bar 44 0f section Bwill overhang the strlp 62 'of sectionC and hold it closed until thesection B is moved out of the way.

I The right-hand section Dis simllar n construction to the left-handsection C, ust de scribed. For this reason it will be unneces sary toset forth its construction in detail.

It has the same partsbut they are arranged oppositely to section G. Inother words, the open edge of both sections 0 andDis toward the centralsection B. On section 1) the same reference characters-are shown as uponsectionQ' The display-areas of sections C and D, the outside sections,may be dividedup or left without division as des'iredQ In the embodimentillustrated, I have dividedthe area of each section into sixsmallerareas. These are separated by partitionsof the same construction asthose shown anddescribed in connection with the central section B.Because of this identity of construction it will, therefore, beunnecessary to repeat the description'; It will suflic'e-to point outthat the top plates of these sections designated 42? correspond to thecovering plates 42 of sect1on B. Beneath each of the covering strips 42thestructure is the same as that shown I in Fig. 2 beneath the coveringstrip 42". The screws passing through the structure of strips 42- aredesignated-65.

1 The mountings of the display sections may now be considered. The'firstofthese to be taken'upis the centralsection B. At its up perend lt issecured to its frame A by two link hinges;

of brackets 67 and 68, theformer secured to theframe'A'and the latter tothe section B. Likewise, the link 69 is pivotally secured" to theupstandlng links of brackets 70and 71 the former secured to the frame'A'and the latter to the section B. These links both move in verticalplanesand when the section 1s in its closed position, resting in thepanel of the frameA, the connection of each link.

to the panel is below its connection to the main frame. As a result ofthis arran ement a movement of the sectionB outward-from the framecauses the section B to rise at the same tune it moves outward asillustrated in Fig. 7. v y

The lowerportion of the sectionB is 'c'oni nect'ed to the frame A in asomewhat similar I y Thedink 66 is pivotally connected at its oppositeends to upstanding'lugs to a way by the mechanism E. There are upperbrackets 72, 73, "secured' respectively to the frame members 25 and 24,and lower brack 1 ets 74and :15, connected to the lower portion of thesection B. In the case of these lower connections, the upstanding lugsupon the brackets arenot connected by independent links as in the caseof the links 66 and 69 but they are connected'by arms 76 and 77 whichare pivoted at their lower endsjto the lower brackets 74 and 7 5,respectively and at their upper ends are fixedgto a crankshaft 7 8 whichis journaledin the upstandinglugs I of the brackets? 2 and 73.The'members 76 and 1 7, being fixed to theshaft '78, must move with it.In a way these two members are links but do not have independentmovement.

Both have a common pivot tends upward. near the back of. the main frameA and the crank arms 76 and 77 extend I downward. When it is desired to:rock the I I p I J in the shaft 78. 7 One end of the crank shaftZS isprovided with a hand crank 79. WVhenthe section Bis in normal displayposition, the crank 79 exdraw it, outward away from the back of thestructure into a position extending outward there-from, as'indicated inF ig. 7. WVhen this is done, the crankarms 76 and 7 7 force the sectionB outward andupward, and, at'

the same time, the upper end of the'section movesin a similar mannerupon the links 66 V within thecentral panel oftheframe'formed J by heflanges of the frame members which go I toma'ke up the central panel.

' f'position. 'Thefouter end of the shaft 88 is position it is onlynecessar'y'to turn thecrank back toits normalf'posit-ion; v r 'At thetimethesection-B s in open posi 'tion, it"may be. held-in that positionby a catch bar-havinga notch 81. The bar80j f passes through an opening82 in the horizon-' tal flangeof the frame member 21, and the bar maybemovedso asto bringthe shoulder V of the notch into engagement with adjacent portion of the 'flange. The upper endofthe bar: 80 ispivotallyconnected to the crank I arm 7 7 at a pointflintermediat'e of. itslengthand the arrangement is such that the 1iotch'81 will be in holdingposition when the-crank arm77lis in a positionapproaching the ho'rizontalfwhich isthe position corresponding to the openposition of;thesection B.. Itwill be .seenthatby merely releasing the bar 80 inthemovementg' When the section B is in itsjnormal display'positionitfits closely Passing} now to a consideration of the mountings-of theoutersections G. and D, it

. will be s'eenthat they have similar link hinges iand crank shaftconnections. 1 Thus,the sec tion C ,has links 82 and 83 which are con-.

: nected at their inner: ends to the upstanding lugs 'of brackets 84'and85 connected to the sectionQ'fAt their outer ends the links 82 and .83are connected to similar lugs upon brackets'SG and 87*secured,respectively, to

i theframe memhers20and 21: The-links 82 and :83 .diiier from the links66 and 69 in that the connection with the brackets .86 :and

L87 upq the main frame is in each case apin and slot connection. I This.allows a little play which enables theinner, edge of the section toremain ractically unmoved whiletheouter edge is ing shifted from its:normal posi- 7 tion. The crank shaft connection includes the shaft 88journale'din upstanding lugs of trackers 89 and 90 secured tothe frame.memher 22 nea'rits opposite ends... The crank shaft'carries'crank arms91 and 92 which are fixed to the-shaft and pivotally. connected to l."the upstanding lugs of brackets 93 "and 94 secured to the section Cat-pointsfinwa'rd of the shaft when the parts are "in normal turnedabruptly to'provi'de a crank arm 95.

When the crank arm 95is in the position illustratedin Fig.8, thesection'cfrests in its panelin the main frame. As soon as. the

crank arm is moved outward a little bit,

the outer edge of the section is moved forward, as indicated in Fig. 9..It .isduring this early'movementthat the slots in the links 82 and 83come into play. the outer edge of the section moves forward, theinneredge I I moves more or less in 'theplane of thefmain frameand thus movesthelinks so as'to' shift 1 the pinsinsthe slots. The new position mentof the crank arm '95, illustratedin .Fig.

entirel '-.clear of the-main frame.

that illustrated in Fig; 9f Further move- Section. D is. mountedsimilarly to section 9 10,; causes'the inner edge of the section- C tomove outward so as tojbring the section 1G and hascorrespondingpartswhich bear 5 corresponding reference characters; Itwill I be noted; however, 'thatwhat is at the right, I

when viewing section C is; at the leftwhen viewing section D. In otherwords, the parts.

are reversely positioned. However, this need not require separatedetailed description of;

crank shaft connections the link hinges and of section D.

For the purpose of rocking the'outer tions C and B at the same time, andgiving c 1 them'a' like movement n oppos1ted1rect1ons,' f I provlde' theconnectingand actuat ng mechanism F which includes a central. hand leverY .96 which is pivoted at the point- '97 to the iorizontal flange of thevframe fmemhe'r 21. 5

Outward froin'the' pivotjpoint 97., and upon short extensions 98 and 99,are pivotally con nected the innenendsof rods lOO and 101 which. areconnected ,at' their outer endsjto the cranks 95 ofsections C and Dlrespec tively. Each connectingrod and-.101; is P provided with anadjustable sleeve 102' hav- 1; ing threaded engagement with sectionsofthe rod: By turning thissleeve the-sections may be drawn togetherormovedapart soiasfto adjust the length ofthe rod in eachcase. 9

N mall the hand leveri96 lies P108811) 1 i the under'sidefofthe-framemember 21. At such time, the projections 98 andv 99 hold theconnectingrods 100 and 101 clearof other parts, as illustrated iniFigJS.By pulling upon the free end of the-handlever96, the

rods 100 and 101" may be 'moved'outwardly and the cranks operatedine themanner heretofore explained. The intermediate-poi sition of the parts isshown in Fig/9. The fullyopenzposition of the outer sec-' tions and thecorresponding position of the actuating parts are shown in Fig.110., By

hers Hand 45 upon sectionjB, vwith the reason of the interlocking ofchannel ,mgimflanges of'strips 62,upon.the, sections -G{ and D, it willbe seen that thej mechgq anism Fearinotloe operated to open the outer; Vsectionsxas longas the centralsectionB isl i in closedposition, andthelocking memhersl l sections. opening the sections of the board istofm'ove and 45 overlap the members 62 ofthe outer Consequently, 'the-fir'st step in," J

the central'section B outward; as before ex- .plained, to the positionillustrated in F ig. 8.1L I

Then the lever. 96 of mechanism F'may be i actuated to open the outersectionsof C and D as, explained. Forthepurpose of obtain i,

'f s outersections G and D;

ing access to the section B it is only neces- 'sary to move thissectionoutward" into the position i-llustratedin Fig. 8. Atithat timethe openin'gs'for receiving the display matter are exposed and availablev to the attendant who i's'freplacing the material. .After the sectionsC and are moved out into open position, then the central section ispreferablyfrestored' to its normal position, or a whilethe centralsection rema'ins close'cll I position approaching normal, asillustratedin Fig. 10,; Then theinnerredges of the sectionsC and Dareleftclear for"the with drawal and insertion of display matter in thosefsectionsQ IWhen the changes ofithe matter have been made,;then it isim'possible toreturn.

the outer sections to. theirnormal position isnecessary toagain'jopen'thecentral section before the outer; sections can berestored to normal position. 'Toprev'ent damaget'o the parts, alug103 isplacedfupon the section B the path of travel 'of theleve'r. 96'. anattemptismade to restore the outersecti ons. while the central sectionis in. closedfposition,

then the lever; 96 can bemovedonly until it engagesthe-lugpr stop, 103.is indicatedby the dotted line position of; lever 1 96 in Fig. 10;.is,thereforeyimpossihle to, restore. the sections to normal positionexcept in a givenorder; namelythe outer sections first and then thecentral section; just as it is .i mpossible to open the sections except,in a

giwenolid-er, namely, the central section first followed by the outersections.

- I when the sections are all inc'losed position the'central sectionwill lock the outers'ections and by simply-locking the outer section to.the ima-in frame t the} entire structure I is closed againstinterference. To accomplish the locking of theleentralsectionto. themain -frame,l locate upon'the-lever 96; an eye bolt I position edforwatten ion'to thecentralysection-B ai1din'Fig,v iQif or attentioninterference? q AWh'en open, I the, display: sect ons are, qu te clearof the main frame vand-spaced some 104 and 'positionthe same so that}when'ithe partsiare in closedposition the eye lqifwill pass through anopening a hasplQE) pivoted to the, front of-theseetion-B at its loweredge.

.When the eye-boltgexte'nds throughithe 'hasp I a p adl-ock m-ay'beslipped -through the eye'- bolt andthe-parts will then bejsecure-dagainst d stancefrom it throughontthe jentiresye i-cal l'engthsothat itis easy toinsert andfwithdraw the; jdisplay matten; This isjclearlyshown. inaFigs. 8,1 andl0,.wh;er e the .p artia-ll-y withdrawn 1 displaycards: 1 06" and; 1-07-7318 shown lIl'dOtl'sed llll Iii- Fig, 8-th'eparts are Obviously; in carrying out my many ninor'additions andalteration's may be ll madejjih thematter disclosed w-ithout depart ling;iffon"i.the 'Spirit andseen fitthe inven A displ he in e ral tyio pe-E sie di pl n .rme y rest ns i 'h; aid- 31l 5 P Y9 edj' niembersmovable in'parallelp anesconnect Li saiid t n. it isi f rdl pan l;-

tion'. therefore do not wish to be limited to'the exact details shownbntfaimi to cover "bythe terms ofthe appended claims all'those withiin'thelimits of'my invention. s I H 1 What I claim as newandxdesireto' secure by a'pate'nt'ofthe United States is g 1 I. A displayboard'comprisingthree ad;-

additions-andalterationswhich rigttl cqtme t jac-ent panels, a displaysection normally resting in each said' pane'hlin k hingesatith'e' upperedgeof-the'centr'alsectlon forcorn e'ct- 1 ing saiclsect'ion to itspanelypivot'al meansat 1 the lower end of said centralse'c-tion torshift} 1 ing the lower-end of said section into an'd' out of 'ijtsnormalposition in its panel,'l ink hin ges connectingthe outer sections totheir panels respectively, pivotal means connected. to eachgo'u'tersection for shifting the adjacent por- "tion of said sectionforwardiout ofits nor nia'l position in its panel, and connecting and: Hnoperating 'means between the pivotal means 'on said outer sections foractuatings'aidpivotalineafns to move said oute'r'sectlonsjto and fro,toward, each other to normal positions andfroineachotheritoopenpositions 2; A di's'pl'ay board comprising'a plurality ofadjacent panels,.a displayseetionnofmally 3 resting in each saidpanel,pi-v oted IIlQHlbGP-S movable invertical planes'for connecting one9 of said se'ctionsto. its panel, pivotedmenibers movable 1n planestransverse to. said. vertical planes for-connecting a second ojf'saidl'sec tions to its panel, and mean's'earried' by'On Q of saidsections forjholdingtheother'of'said sec- ,moved from its panel.

.tions in its panel until saidonesection is reof panels. adisplaysection normally testing ay board: comprisinga in each said"panel,j means pivotally. connecting [said] sections to their respectivepanels 4 whereby said sections may be rocked' inintersecting. planestoand-fro-between theirf from theirgrespective panels, andfineanscarrledby one of. said sections i'or engagin the j its panehnormalpositions andopen.positions outward 11o. 1 other of said sectionswhen the latter is n} I no al ppsi e a f h lr he sam there as long assaid on'e section remains.

i5. 'A"displayiboard comprisin a i ction A d nai b i i r s iaeap imdlity1 f panels, a .displayfsection' normally res t- T 2 panels "fand'flbpgnrpogitionsn fnrward. 0i said f: 1 j -pane1s, tqwar'd eajph Other'i nto Said normal;

" s'ajid panel,- connec ting and "operating means V a mine P2 a pl ra yP 3 di p ay e i n? ting said Central iner'n pane s'iwhilei'allse'cti'dns ar in thLein fes pe p1ane; m;1ac r.. naw ng panel s p aggadisplaysection having length ztn'djbreadth 1 V and depth "correspondingv-tQISaid spaCQsOfaS t fitwithin the same; :a"1ink; hing'e'pivopayllysecured atOneifehdtd-thginnfdgebf.said s'e tion and gxtending outwardthQ IQfIOID Vk V and'secu r'ed at its otherlendby a -pin'ahdslofi"fonnec tion to 'Said 'fraIHQ; a'.""cmn k shaft iou'rnaled in said frameoutward qi saidpi'n; I

giand slotfandhaving its axisextending inf" ff 5 the megma-m1 directionas that Of said-pin, T 31" 7 j a cr ankflarm fizfed to rsaidshaft-:Lnd-eiztnd V 1 ing inward andpivroted at its inner fre end;

to said section, andffinzixisfor rocking said 1 shaft, whereby theOuteredge 0f saidis ti M 'mc'ives 'nout ward fromifiS nOrmaL p SiijiOnin "said P p ce'mor l ckly h @98 t y 0- nf 'ad p "y han :ir mmi pmysections 7 piyotall-y s clilfedgtd said frame it)!" r V frame intogopenjpq sitibns" spaced. from pa d,

fframe, cravnks'on' said 'segtion's for a ctnaitin g I v ihem; acentral-Myer piivi ofiedft bfs aid fra e, f;

on opposite; sides 1 of its: pivotal jcdnnectioni V to said frame, a'jcentfal niexnbergfpivoid 'to, a 1 sziid ifra me andh'operatiyegtg.engaggsaidjdi-. V play section's inrclosedjpositibngtohold'thm; fthere, and "means. on Said 'c Qnt'xa1' InI I'1be1f -'f o r 9 Ipreventing'theoperatigniof saidlefiritb'shifiti: said sections to, closdV positiog V whene'vr nsaidcencral m embei' is nofiinjpbsitionjtoagdnnit said sections beneath it fb r locking 11'r- 'n poses. i E 5:VIIOO'QY-I; ll ljiAfdigplay board;colhpriingfal framei'ihreedi'splayseptions p iVotre'dlto said frame i01 'mvement "fromclosgd-p'ositiohsf against? "said frame-into open-positionsspaed froin 7Qsaidjfra-me; said jcentrak'sectipn being fopeijlativeft'o engageithebthr-tWd sections t0 hol the'inin closed position, iclfanjks onfsgifdmtg sectioni for actuating fthm, 18 'c'efitiall ljer n pivoted yto said'fnain'e, i'ds cgnncting igt their"outrbnds ztbfsaidjdlanksjand Tat thi]n. inner ends to saidlvl' on;oppoitgisidspf I its "piitbfialiconnectibnto" aidffraxngflatndf inanfn Said CeIltifilfSQCtiQli10141112611 allelllinku niauyi in en link hinges for moving said outer sections onvertical axes forward from their respective panels and laterally awayfrom said central panel, parallel link hinges for'moving said centralsection forward away from said central panel, andv overlapping memberson said central section for retaining said outer sections innormalposition. s 14. A display board comprising a plurality of panels, adisplay section normally resting in each said panel, parallel linkhinges for moving one of said sections on vertical axes'forward from itspanel and laterally away from said other panel, parallel link hinges formoving theother of said sections on horizontal'axes forward from itspanel,

and overlapping Ineans'on said latter section for retaining said firstmentioned section in normal. position; 1' 1 In witness whereofyIhereunto subscribe my name this 25th day of May, A. D1929.

EDWARD" LEUL

